CFX Community Forum

Hi All, I have lately visted the CFX Community Forum (members only), as opposed to this forum, I was amazed to see that most of the querries are not attended to either by fellow users or CFX staff. This is very suprising because it is expected that the questions posted to that forum are from registered members/licensed users, who I assume pay for the use of CFX. This is different from this forum because here any 'anonymous figure' like nyatoto can write anything and get attension. As for the Community Forum, one must give detailed address as one of the conditions to get access (login password).

My question is, why is that forum so inactive?. For example, out of 11 postings, some of which have been sitting there since Feb, only 2 have be replied to.

Is it just a forum for resources or ALSO to address our problems as a CFX Community??

Note that I have chosen to put these question here and not there because I believe here somebody will read and respond.

Hi nyatoto which particular forum on the CFX site are you talking about. Most postings I've seen there have been replied to, may be I'm missing something ? Robin, is very active there like he is on this site ? it just suprises me knowing how much effort they all put in. Bob

point taken, yes there is very little response in that section of the CFX comunity web site. I personnally do not often use CFX4 so I'm not that interested. I would also like to say that having the option on the first page of the comunity site to filter which pages you are interested in is a little dangerous. I noticed this option just the other day and found a whole load of other forums that I had managed to filter out using this option. May be this is why there are very few responses in this section. May be you could step up and fill the gap ? Lets hope the postings recieve answers Bob

CFX-4 is basically a dead product. It is no longer being further developed by CFX. Hence there is little to no activity on the CFX-4 forum. You will find that most of the active stuff is in the CFX-5 forums.

I'm not sure why most people would want to use CFX-4 these days unless there is some very specific model/capability not available in CFX-5. Usually this revolves around some sort of esoteric user fortran usage. Most CFX clients are using CFX-5 now.

If you are a VERY experienced in the field of modelling and simulation, you will respect the fact that some very brilliant brains spent some sleepless nights to develop such codes. All codes have areas weakness and strength. This is normal.

CFD users are intelligent people whose choice of code should be respected. You seem to question the wisdom of those who have chosen to use CFX4.4/4.3. This is really sad!! Up to this moment, some of us still use either CFX5.5.1 or CFX4.4 depending on the problem we are solving.

Easy now, Nyatotot Neale did write "I'm not sure why most people would want to use CFX-4 these days unless there is some very specific model/capability not available in CFX-5" Please note the these days. I did not understand Nealses comment that he queistioned the selection of CFX4 in the past.

I have used CFX4.* and even flow3d, I think it was version 3.* or wathever. At least I have been using the code for more than 10 years and I do think I have a user fortran for almost everything, but I am shifting slowly to CFX5 - because I do also beleive that CFX4 is at a dead end these days! with the many new models (not all yet though) CFX5 is a better alternative for most people. (But hell I miss CFX4 when I get stuck in CFX5 )), but I will Conquer

I am a bit surprised that turbulent particle dispersion is included. I think a asked a couple of months ago (when I was at rainy Harwell, you can check at the community site when it was - there is a thread about the climate in Harwell ) I did understand that turbulent particle dispersion would not be included - but I must have been mistaken. I have not installed 5.6 yet, so I can not check it. Is it the standard eddy life time? with an option to modify if to own and better and more accurate models ¨